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STK672-442B-E Datasheet(PDF) 11 Page - Sanyo Semicon Device |
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STK672-442B-E Datasheet(HTML) 11 Page - Sanyo Semicon Device |
11 / 26 page STK672-442B-E No.A1735-11/24 [Vref (Voltage setting to be used for the current setting reference)] • Pin type: Analog input configuration Input voltage is in the voltage range of 0.2V to 1.8V. [Input timing] The control IC of the driver is equipped with a power on reset function capable of initializing internal IC operations when power is supplied. A 4V typ setting is used for power on reset. Because the specification for the MOSFET gate voltage is 5V ±5%, conduction of current to output at the time of power on reset adds electromotive stress to the MOSFET due to lack of gate voltage. To prevent electromotive stress, be sure to set ENABLE=Low while VDD, which is outside the operating supply voltage, is less than 4.75V. In addition, if the RESETB terminal is used to initialize output timing, be sure to allow at least 10 μs until CLOCK input. ENABLE, CLOCK, and RESETB Signals Input Timing [Configuration of control block I/O pins] <Configuration of the MODE1, MODE2, MODE3, CLOCK, <Configuration of the FAULT2 pin> CWB, ENABLE, and RESETB input pins> (The buffer has an open drain configuration.) The input pins of this driver all use Schmitt input. Typical specifications at Tc=25 °C are given below. Hysteresis voltage is 0.3V (VIHa-VILa). 4Vtyp 3.8Vtyp At least 10 μs At least 10 μs No time specification Control IC power (VDD) rising edge Control IC power on reset RESETB signal input ENABLE signal input CLOCK signal input VIHa When rising When falling 1.5Vtyp VILa 1.8Vtyp Input voltage Input pin 5V VSS 10k Ω 100k Ω 5V Overcurrent Overheating 50k Ω 50k Ω Output pin Pin 8 50k Ω Motor terminal open |
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